Advantages
1. Save Battery power as there is a build in auto-power shut down timer after 20 sec +/- 2 sec
2. Power by CR1632 Battery and stand by time for up to 6 month and depend on usage.
3. Compact size only 18 mm in diameter and 5mm thickness+/- 0.5 mm.
4. Can installed in various scales model application.
5. Can use to drive metal truster/ booster led light power source.
6. Sound activated and no need to switch on and off via 2 way switch.
7. Can serve as a power source for most 3 Volt device.